Investigating a Device Independence Quantum Random Number Generation
Vardaan Mongia, Abhishek Kumar, Shashi Prabhakar, Anindya Banerji, and, R.P. Singh
TL;DR
This paper demonstrates a device-independent quantum random number generator using entanglement and two-photon interference, ensuring certified unpredictability suitable for cryptographic applications.
Contribution
It introduces a method to certify quantum randomness through device-independent techniques, combining CHSH inequality violation and quantum state tomography.
Findings
Successful certification of randomness via entanglement.
Use of CHSH inequality violation as a security check.
Potential for extending to faster randomness expansion.
Abstract
Quantum random number generation (QRNG) is a resource that is a necessity in the field of cryptography. However, its certification has been challenging. In this article, we certify randomness with the aid of quantum entanglement in a device independent setting, where we choose two-photon interference for source characterisation. The CHSH inequality violation and quantum state tomography are used as independent checks on the measurement devices. These measures ensure the unpredictability of quantum random number generation. This work can be easily extended to faster randomness expansion protocols.
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Chaos-based Image/Signal Encryption